readygpu

Intel Arc B580 vs NVIDIA Tesla P40

For running models locally, priced in the UK. At 8k context the first runs 13 models fully in memory, the second 28.

In short

The NVIDIA Tesla P40 has more memory for models: 24 GB against 12 GB. At 8k context the NVIDIA Tesla P40 runs 28 of the models we track fully in memory and the Intel Arc B580 13; only the NVIDIA Tesla P40 holds Qwen 3.8 27B. On the models both run fully in memory, the Intel Arc B580 is about 1.1× as fast as the NVIDIA Tesla P40 (estimated, median across models). In the UK the Intel Arc B580 costs £323 at eBay and the NVIDIA Tesla P40 £261 at eBay (used): the NVIDIA Tesla P40 is £62 cheaper.

Updated . Speeds are estimates; how they are worked out.

Intel Arc B580

£323

eBay

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NVIDIA Tesla P40

£234

eBay

Add to build

Specifications

SpecIntel Arc B580NVIDIA Tesla P40
GPUArc B580Tesla P40
Memory12 GB GDDR624 GB GDDR5
Memory bus192-bit384-bit
Memory bandwidth456 GB/s346 GB/s
FP16 compute116.5 TFLOPS11.8 TFLOPS
SoftwareSYCL / oneAPICUDA
Board power190 W250 W
PCIe generationGen 4Gen 3
PCIe lanesx8x16

What each runs

Estimated decode speed with the most precise quant that fits each one est.

ModelIntel Arc B580NVIDIA Tesla P40
Qwen 3.8 27Boffload10tok/sUD-Q6_K
Qwen 3.6 27Boffload9tok/sQ6_K
Gemma 4 31Boffload9tok/sQ5_K_M
Qwen 3.6 35B-A3Boffload62tok/sUD-Q4_K_M
Qwen 3.5 27Boffload9tok/sQ6_K
Gemma 4 26B-A4Boffload32tok/sUD-Q6_K
Qwen 3.5 35B-A3Boffload62tok/sQ4_K_M
GLM 4.7 Flashoffload32tok/sQ5_K_M
Devstral Small 2 24Boffload10tok/sQ6_K
gpt-oss 20Boffload49tok/sMXFP4
Qwen3 Coder 30B-A3Boffload44tok/sQ5_K_M
Qwen3 32Boffload10tok/sQ4_K_M
Gemma 4 12B22tok/sQ6_K16tok/sQ8_0
Qwen 3.5 9B23tok/sQ8_022tok/sQ8_0
Mistral Small 3.2 24Boffload10tok/sQ6_K
Gemma 3 27Boffload9tok/sQ6_K
DeepSeek R1 Distill Qwen 32Boffload10tok/sQ4_K_M
Qwen3 14B22tok/sQ4_K_M13tok/sQ8_0
Ministral 3 14B21tok/sQ5_K_M14tok/sQ8_0
DeepSeek R1 0528 Qwen3 8B23tok/sQ8_022tok/sQ8_0
Qwen3 8B23tok/sQ8_022tok/sQ8_0
Phi-4 14B22tok/sQ4_K_M12tok/sQ8_0
Qwen 3.5 4B48tok/sQ8_045tok/sQ8_0
Ministral 3 8B22tok/sQ8_021tok/sQ8_0
Granite 4.2 8B21tok/sQ8_020tok/sQ8_0
Gemma 4 E4B27tok/sQ8_025tok/sQ8_0
LFM2.5 8B-A1B86tok/sQ8_088tok/sQ8_0
Llama 3.1 8B30tok/sQ6_K28tok/sQ6_K
Qwen 3.5 122B-A10Bwon't runoffload
Qwen3 Coder Nextwon't runoffload
Mistral Small 4 119Bwon't runoffload
GLM 4.5 Airwon't runoffload
Qwen3 Next 80B-A3Bwon't runoffload
Nemotron 3.5 Lightning 30B-A3Boffloadoffload
Kimi Linear 48B-A3Boffloadoffload
Llama 3.3 70Bwon't runoffload
DeepSeek V4 Flashwon't runwon't run
GLM 5.3 Flashwon't runwon't run
Qwen 3.8 Flash Nextwon't runwon't run
MiniMax M2.7won't runwon't run
Nemotron 3 Super 120B-A12Bwon't runwon't run
gpt-oss 120Bwon't runwon't run

Questions

Which is better for local AI, the Intel Arc B580 or the NVIDIA Tesla P40?
Choose the NVIDIA Tesla P40 to run bigger models. Choose the Intel Arc B580 for speed. Choose the NVIDIA Tesla P40 to spend less.
Which can run bigger models, the Intel Arc B580 or the NVIDIA Tesla P40?
At 8k context the NVIDIA Tesla P40 runs 28 of the models we track fully in memory and the Intel Arc B580 13; only the NVIDIA Tesla P40 holds Qwen 3.8 27B.
Which is faster for local AI, the Intel Arc B580 or the NVIDIA Tesla P40?
On the models both run fully in memory, the Intel Arc B580 is about 1.1× as fast as the NVIDIA Tesla P40 (estimated, median across models).
What is the price difference between the Intel Arc B580 and the NVIDIA Tesla P40?
In the UK the Intel Arc B580 costs £323 at eBay and the NVIDIA Tesla P40 £261 at eBay (used): the NVIDIA Tesla P40 is £62 cheaper.

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